<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=0"/>
    <title></title>
    <style>
        body,html{
            padding: 0;
            margin: 0;
        }
        a{
            display: block;
            height: 100px;
            width: 100px;
            /*怎么定义高亮的颜色*/
            -webkit-tap-highlight-color: transparent;/*透明 其实就是不显示颜色*/
            -webkit-tap-highlight-color: red;
        }
    </style>
</head>
<body>
<a href="javascript:;"></a>
</body>
</html>